Simulations of flame acceleration and deflagration-to-detonation transitions in methane-air systems

Journal Article · Sun Nov 14 23:00:00 EST 2010 · Combustion and Flame

DOI:https://doi.org/10.1016/J.COMBUSTFLAME.2010.04.011· OSTI ID:21379813

Kessler, D A; Gamezo, V N; Oran, E S ^[1]

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1. Laboratory for Computational Physics and Fluid Dynamics, Naval Research Laboratory, Washington, DC (United States)

Flame acceleration and deflagration-to-detonation transitions (DDT) in large obstructed channels filled with a stoichiometric methane-air mixture are simulated using a single-step reaction mechanism. The reaction parameters are calibrated using known velocities and length scales of laminar flames and detonations. Calculations of the flame dynamics and DDT in channels with obstacles are compared to previously reported experimental data. The results obtained using the simple reaction model qualitatively, and in many cases, quantitatively match the experiments and are found to be largely insensitive to small variations in model parameters. (author)

• OSTI ID: 21379813
• Journal Information: Combustion and Flame, Journal Name: Combustion and Flame Journal Issue: 11 Vol. 157; ISSN CBFMAO; ISSN 0010-2180
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
ACCELERATION
AIR
COMBUSTION KINETICS
Deflagration-to-detonation transition
EXPLOSIONS
FLAME PROPAGATION
Flame acceleration
LAMINAR FLAMES
METHANE
MIXTURES
SIMULATION
STOICHIOMETRY
VALIDATION
VARIATIONS